Showing 1 - 10 of 52
Persistent link: https://www.econbiz.de/10001748236
This paper gives identification and estimation results for quantile and average effects in nonseparable panel models, when the distribution of period specific disturbances does not vary over time. Bounds are given for interesting effects with discrete regressors that are strictly exogenous or...
Persistent link: https://www.econbiz.de/10003899091
The recent literature on instrumental variables (IV) features models in which agents sort into treatment status on the basis of gains from treatment as well as on baselinepretreatment levels. Components of the gains known to the agents and acted on by them may not be known by the observing...
Persistent link: https://www.econbiz.de/10003989944
In this paper we study post-penalized estimators which apply ordinary, unpenalized linear regression to the model selected by first-step penalized estimators, typically LASSO. It is well known that LASSO can estimate the regression function at nearly the oracle rate, and is thus hard to improve...
Persistent link: https://www.econbiz.de/10003989968
effect, or stochastic dominance. Our theory applies to general policy interventions and covers the main regression methods …
Persistent link: https://www.econbiz.de/10009492354
inferential procedures. We develop theory for large sample inference based on the strong approximation of a sequence of series or …
Persistent link: https://www.econbiz.de/10009375645
In the first part of the paper, we consider estimation and inference on policy relevant treatment effects, such as local average and local quantile treatment effects, in a data-rich environment where there may be many more control variables available than there are observations. In addition to...
Persistent link: https://www.econbiz.de/10010227452
We derive a Gaussian approximation result for the maximum of a sum of high dimensional random vectors. Specifically, we establish conditions under which the distribution of the maximum is approximated by that of the maximum of a sum of the Gaussian random vectors with the same covariance...
Persistent link: https://www.econbiz.de/10010227470
We develop a new direct approach to approximating suprema of general empirical processes by a sequence of suprema of Gaussian processes, without taking the route of approximating whole empirical processes in the supremum norm. We prove an abstract approximation theorem that is applicable to a...
Persistent link: https://www.econbiz.de/10010227479
In this work we consider series estimators for the conditional mean in light of three new ingredients: (i) sharp LLNs for matrices derived from the non-commutative Khinchin inequalities, (ii) bounds on the Lebesgue factor that controls the ratio between the L8 and L2-norms, and (iii) maximal...
Persistent link: https://www.econbiz.de/10010227484